The embassy was first founded by Lava Bolt and Flame Dash at the start of the year. Although strictly speaking Stalliongrad doesn't need an embassy, it's so far away from Ponyville that it may as well have one. With Lava Bolt's new 'Ambassador' status, he uses his money to privately fund certain small businesses, such as Cirrus' Chilly Confections.
Ambassador: Lava Bolt
Receptionist/Lead Scientist/Cleaner: Flame Dash